You are participating in a new rip off Holy Grail War Ritual held in Luluhawa, Hawaii. As the level headed magus you are, you decided to summon before hand in order to get a tactical advantage on the other Masters. With still 1 months till the actual battle starts, you manage to Summon Gilgamesh in his Caster form. Now if you live through this war ritual depends on if you can get along with this Servant enough for him to regard you as his Master.

Tezcatlipoca is the most powerful god on earth in Aztec Mythology. Ruler of war and magic, beauty and discord, night and domination, storm and pestilence, crime and governance, fortune and misfortune, providence and belligerents, as well as the dynamism that is born of their confrontations. In other words, the embodiment of the black sun that reflects everything. He is originally the berserker-class grand-servant, later assassin, summoned by Daybit Sem Void.

He is a 24 year old man and the Master of Grand Assassin Tezcatlipoca. He was formerly one of the forty eight Chaldea Master Candidates and a member of the A Team. Daybit is said to be an extraordinary person, that's why he will not try to understand anyone, nor will he ever be understood.